Problem Display
PID: 7825 (N7/1rP5/kP5Q/8/K7/8/8/8 w - - 0 1)

Antipov, Viacheslav Pavlovich

Belevskaya Pravda, 1994

N7/1rP5/kP5Q/8/K7/8/8/8

#2

5 + 2


SOLUTION


  • SOUND
  • Sets
    • 1...Rxb6
      • 2.Qxb6#
  • Keys
    • 1.Qc6!
      • threat
        • 2.Qb5#
        • 2.Qc4#
      • 1...Rxb6
        • 2.Qxb6#
      • 1...Rxc7
        • 2.Sxc7#
      • 1...Ra7
        • 2.b7#
      • 1...Rb8
        • 2.cxb8S#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(b);OGATE,P_SPINR(b),XP(B)::QAR1(C),XR(b)
  • Actual
    • Q(C);
    • Threat
      • DUALS(2)
    • Vars
      • R(b);OGATE,P_SPINR(b),XP(B)::QAR1(C),XR(b)
      • R(b);XP(D)::S(E),XR(b)
      • R(b);OGATE,SBLOCK::QAR(C)+P(B)
      • R(b);OGATE::PXR(b)=S


Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).